Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS6319063 B1
Publication typeGrant
Application numberUS 09/653,921
Publication dateNov 20, 2001
Filing dateSep 1, 2000
Priority dateMay 16, 2000
Fee statusLapsed
Publication number09653921, 653921, US 6319063 B1, US 6319063B1, US-B1-6319063, US6319063 B1, US6319063B1
InventorsNan-Tsung Huang
Original AssigneeHon Hai Precision Ind. Co., Ltd.
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Shielded electrical connector
US 6319063 B1
Abstract
A shielded electrical connector (1) comprises an insulative housing (10) having a mating portion (11) defining passageways (111) therein, a plurality of terminals (20) received in corresponding passageways, and a shield (50) enclosing the housing. A rectangular receiving opening (521) is defined in a front surface (52) of the shield for exposing the mating portion of the housing to a complementary plug connector. The rectangular receiving opening is defined by a pair of opposite lateral edges (56, 58) and a pair of longitudinal edges (57, 59). A pair of spring fingers (524, 524′) respectively extends rearward from the lateral edges in a staggered manner. A sum of lengths of the spring fingers is substantially larger than the length of each longitudinal edge whereby the complementary plug connector is reliably retained in a mated position.
Images(5)
Previous page
Next page
Claims(1)
What is claimed is:
1. A shielded electrical connector for connecting with a complementary connector, comprising:
an insulative housing having a mating portion with a plurality of passageways defined therein, a cutout defined in a middle portion thereof and a pair of side portions on opposite sides of the cutout, each with a channel defined therethrough, the mating portion being received within the cutout;
a plurality of terminals received in corresponding passageways of the mating portion;
a shield enclosing the housing, the shield having at least a front surface, a top surface and a pair of side surfaces, each side surface comprising a downwardly extending positioning member and a horizontally bent trunnion for securely mounting the shielded connector to a printed circuit board, the front surface defining a rectangular receiving opening therein for exposing a mating portion of the housing to a complementary connector, the rectangular receiving opening being defined by a pair of opposite lateral edges and a pair of opposite longitudinal edges, a pair of receiving holes, a pair of spring fingers having curved free ends respectively extending rearward from the lateral edges, the pair of spring fingers arranged in a staggered manner, a sum of lengths of the spring fingers being larger than the length of each longitudinal edge for ensuring a reliable engagement between the complementary connector and the mating portion of the housing;
a pair of bushings received in corresponding channels of the housing and through the receiving holes of the shield;
and a positioning panel assembled to a rear side of the housing, the positioning panel forming a post adjacent to each end thereof for engaging with the corresponding bushing.
Description
BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a shielded electrical connector, and particularly to a shielded USB (Universal Serial Bus) connector having spring fingers provided on a shield thereof for ensuring a reliable engagement between the USB connector and a complementary plug connector.

2. Description of Prior Art

USB connectors are increasingly used in the electrical connector field and are intended to integrate most different types of I/O connectors, such as D-Sub connectors and Mini-Dins, into a standard form. A shield is often used to enclose the USB connector housing for protection against electromagnetic interference. To ensure a reliable engagement between the USB connector and a complementary plug connector, a plurality of spring fingers are integrally stamped from peripheral surfaces of the shield of the USB connector for engaging with the complementary plug connector, thereby retaining the complementary plug connector in a mated position. Such a design is disclosed in U.S. Pat. Nos. 5,738,544; 5,779,489 and 5,928,035. The disadvantage of this design is that repeated stamping processes are required, thereby complicating manufacturing. In addition, the shielding performance is also degraded.

Another relatively simple approach for retaining a complementary plug connector in position is to provide a pair of opposite, rearwardly extending spring fingers at opposite lateral edges of a rectangular opening of a shield adapted to receive the complementary plug connector. Relevant designs are disclosed in U.S. Pat. Nos. 5,083,945; 5,207,597 and 5,378,172. However, since the pair of spring fingers is stamped from the shield and is typically arranged symmetrically, the sum of the lengths of the spring fingers is limited to the length of a longitudinal edge by the rectangular opening. Accordingly, the retention force of the spring fingers may be insufficient to reliably retain the complementary plug connector in position.

Therefore, it is desirable to have a shield with a pair of spring fingers each having sufficient length to reliably retain a complementary plug connector in position.

SUMMARY OF THE INVENTION

Accordingly, one object of the present invention is to provide a USB connector having a shield that has a pair of spring fingers each having sufficient length to ensure a reliable engagement between the USB connector and a complementary plug connector.

Another object of the present invention is to provide a USB connector having a shield that provides complete shielding.

A further object of the present invention is to provide a USB connector having a shield with a simple structure for simplifying manufacturing.

In order to achieve the objects set forth, a shielded electrical connector of the present invention comprises an insulative housing having a mating portion with a plurality of passageways defined therein, a plurality of terminals received in corresponding passageways, and a shield enclosing the housing for electromagnetic interference protection. A rectangular receiving opening is defined in a front surface of the shield for exposing the mating portion of the housing to a complementary plug connector. The rectangular receiving opening is defined by a pair of opposite lateral edges and a pair of longitudinal edges. A pair of spring fingers respectively extends rearward from the lateral edges in a staggered manner. Each spring finger has a length substantially equal to the length of each longitudinal edge whereby the complementary plug connector is reliably retained in a mated position.

Other objects, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an exploded perspective view of a USB connector of the present invention;

FIG. 2 is an assembled view of FIG. 1;

FIG. 3 is a rear perspective view of FIG. 2;

FIG. 4 is a front view of a shield of the USB connector shown in FIG. 1; and

FIG. 5 is a cross-sectional view taken along line 55 of FIG. 4.

DETAILED DESCRIPTION OF THE INVENTION

Reference will now be made to the drawing figures to describe the present invention in detail.

Referring to FIG. 1, a USB connector 1 of the present invention comprises an insulative housing 10, a plurality of terminals 20 for being received in the housing 10, a pair of bushings 30 for being retained in the housing 10, a positioning panel 40 for being attached to a rear side of the housing 10, and a shield 50 for enclosing the housing 10.

The housing 10 defines a cutout 101 in a middle portion thereof with a forwardly extending mating portion 11 received therein for mating with a complementary plug connector (not shown). A plurality of passageways 111 is defined in the mating portion 11 for receiving the terminals 20 therein. A pair of side portions 12 and 13 of similar structure is provided on opposite sides of the cutout 101 each with a channel 121, 131 respectively defined therein for receiving the bushing 30. Each channel 121, 131 has a front enlarged portion 123, 133. A pair of ribs 122 and 132 is respectively formed on the rear ends of the side portions 12 and 13 and is spaced a distance substantially equal to the length of the positioning panel 40 for retaining the positioning panel 40 therebetween.

Each terminal 20 comprises a front contact portion 21 for mating with a corresponding terminal (not shown) of the complementary plug connector, a middle retention portion 22 for retaining the contact 20 in the housing 10, and a rear solder tail 23 extending rearward from the housing 10 for being surface mounted to a printed circuit board (not shown) on which the connector 1 is mounted.

The bushing 30 has a front large-dimensioned end portion 31 and a rear small-dimensioned end portion 33. The front large-dimensioned end portion 31 is adapted to engage with a corresponding front enlarged portion 123, 133 of the channel 121, 131 in the housing 10 thereby securely retaining the bushing 30 in the housing 10.

The positioning panel 40 is adapted to be positioned between the ribs 122 and 132 of the housing 10 and forms a post 41 adjacent to each end thereof for being retained in the rear small-dimensioned end portion 33 of a corresponding bushing 30. A recess 42 is defined in a bottom edge of the positioning panel 40 for extension of the rear solder tails 23 of the terminals 20.

Also referring to FIGS. 2 and 3, the shield 50 is stamped from a metal sheet and comprises a top surface 51, a front surface 52, a pair of side surfaces 53, a rear surface 54, and a bottom surface 55 whereby a complete shielding of the housing 1 can be achieved.

Each side surface 53 provides a downwardly extending positioning member 531 for being inserted into a corresponding hole of the printed circuit board, and a horizontally bent trunnion 532 with a hole 5321 defined therein for receiving a securing means. The positioning member 531 and the trunnion 532 are adapted to cooperatively mount the assembled connector 1 on the printed circuit board. A reinforcing member 533 is provided at a bend line of the trunnion 532 for enhancing the strength thereof.

As is clearly shown in FIG. 3, the rear surface 54 of the shield 5 is composed of a pair of first tags 541 downwardly extending from the top surface 51 and a pair of second tags 542 upwardly extending from the bottom surface 55. Each first tag 541 has an outer lateral edge for abutting against an inner surface of a corresponding rib 122, 132 of the housing 10, and each second tag 542 is spaced from the corresponding rib 122, 132. The first and second tags 541 and 542 are adapted to cooperatively further retain the positioning panel 40 in position relative to the housing 10 whereby rearward displacement of the terminals 20 is prevented thereby facilitating soldering process of the solder tails 23.

Also referring to FIG. 2, the front surface 52 of the shield 50 defines a pair of receiving holes 522 and 523 in alignment with the respective channels 121 and 131 of the housing 10 for extension of an auxiliary latching means of the complementary plug connector. A rectangular receiving opening 521 is defined in the front surface 52 for exposing the mating portion 11 of the housing 10 to the complementary plug connector.

As is clearly shown in FIGS. 4 and 5, the rectangular receiving opening 521 is defined by a pair of opposite lateral edges 56 and 58 and a pair of opposite longitudinal edges 57 and 59. A pair of leading tongues 525, 526 respectively extends forward from the longitudinal edges 57 and 59 each having an inclined surface 5251 for facilitating insertion of the complementary plug connector. To retain the inserted complementary plug connector in a mated position, a pair of spring fingers 524 and 524′ is integrally stamped from the shield 50 and respectively extends rearward from the lateral edges 56 and 58. Specifically, the spring fingers 524 and 524′ are arranged in a staggered manner and have curved free ends 5240 and 5240′ extending toward each other. The spring finger 524 is located at a level different from the spring finger 524′ and a bottom edge 5241′ of the spring finger 524′ is substantially higher than a top edge 5241 of the spring finger 524. As is known to one having ordinally skill in the pertinent art, the bottom edge 5241′ may be substantially flush with the top edge 5241, if desired.

By such a design, a sufficient length of each spring finger 524, 524′, is substantially larger than of each longitudinal edge 57, 59, thereby achieving a sufficient length of each spring finger 524, 524′ and ensuring a reliable engagement between the USB connector 1 and the complementary plug connector. In other words, due to the provision of the staggered spring fingers 524 and 524′, the complementary plug connector is reliably retained in the USB connector 1 in a very simple but effective way without any modification to the remaining parts.

It is to be understood, however, that even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and function of the invention, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US5147220 *May 30, 1991Sep 15, 1992Lybrand Brent BBoard mounted shielded electrical connector
US5685739 *Feb 14, 1996Nov 11, 1997The Whitaker CorporationShielded electrical connector
US5779489 *Oct 25, 1996Jul 14, 1998The Whitaker CorporationBoard mountable electrical connector
US6139367 *Aug 3, 1999Oct 31, 2000Hon Hai Precision Ind. Co., Ltd.Shielded electrical connector
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US6619986 *Apr 19, 2002Sep 16, 2003Hon Hai Precision Ind. Co., Ltd.Electrical connector with metal shield
US7074084 *Oct 8, 2004Jul 11, 2006Tyco Electronics CorporationShielded blind-mate connector
US7364464 *Dec 28, 2006Apr 29, 2008Hon Hai Precision Ind. Co., Ltd.Electrical docking connector
US7448879 *Aug 8, 2007Nov 11, 2008Lotes Co., Ltd.Electrical connector
US8419474 *Jul 19, 2010Apr 16, 2013Hon Hai Precision Ind. Co., Ltd.Connector with improved impedance between contacts thereof
US8696384 *Jan 24, 2013Apr 15, 2014Japan Aviation Electronics Industry, LimitedConnector and mating connector
US8992256 *Nov 26, 2013Mar 31, 2015Ting-Chi CHENElectrical connector adapter
US20110013872 *Jul 19, 2010Jan 20, 2011Hon Hai Precision Industry Co., Ltd.Connector with improved impedance between contacts thereof
US20130196547 *Jan 24, 2013Aug 1, 2013Jae Taiwan, Ltd.Connector and mating connector
US20130344734 *Jun 17, 2013Dec 26, 2013Jae Taiwan, Ltd.Connector and mating connector
US20150044892 *Nov 26, 2013Feb 12, 2015Ting-Chi CHENElectrical connector adapter
DE10247274A1 *Oct 10, 2002Apr 22, 2004Erni Elektroapparate GmbhSteckverbinder mit Abschirmblech
EP1408585A2 *Sep 30, 2003Apr 14, 2004Erni Elektroapparate GmbhElectrical connector
Classifications
U.S. Classification439/607.36, 439/607.34
International ClassificationH01R12/71, H01R12/77
Cooperative ClassificationH01R13/65802
European ClassificationH01R13/658B
Legal Events
DateCodeEventDescription
Jan 17, 2006FPExpired due to failure to pay maintenance fee
Effective date: 20051120
Nov 21, 2005LAPSLapse for failure to pay maintenance fees
Jun 9, 2005REMIMaintenance fee reminder mailed
Sep 1, 2000ASAssignment
Owner name: HON HAI PRECISION IND. CO., LTD., TAIWAN
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HUANG, NAN-TSUNG;REEL/FRAME:011068/0447
Effective date: 20000822
Owner name: HON HAI PRECISION IND. CO., LTD. 66 CHUNG SHAN ROA
Owner name: HON HAI PRECISION IND. CO., LTD. 66 CHUNG SHAN ROA
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HUANG, NAN-TSUNG;REEL/FRAME:011068/0447
Effective date: 20000822